CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LCVE-2021-21003
Medium (5.3) in phoenixcontact. EPSS 0.9% chance of exploitation in the next 30 days.
In Phoenix Contact FL SWITCH SMCS series products in multiple versions fragmented TCP-Packets may cause a Denial of Service of Web-, SNMP- and ICMP-Echo services. The switching functionality of the device is not affected.
Severity
- EPSS
- 0.9% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
- CWE
- CWE-404
- Published
- Modified
- Record from
- the NVD, synced
Affected
- phoenixcontact:fl_nat_smn_8tx-m_firmware
- phoenixcontact:fl_nat_smn_8tx_firmware
- phoenixcontact:fl_switch_smcs_14tx\/2fx-sm_firmware
- phoenixcontact:fl_switch_smcs_14tx\/2fx_firmware
- phoenixcontact:fl_switch_smcs_16tx_firmware
- phoenixcontact:fl_switch_smcs_4tx-pn_firmware
- phoenixcontact:fl_switch_smcs_6gt\/2sfp_firmware
- phoenixcontact:fl_switch_smcs_6tx\/2sfp_firmware
- phoenixcontact:fl_switch_smcs_8gt_firmware
- phoenixcontact:fl_switch_smcs_8tx-pn_firmware
- phoenixcontact:fl_switch_smcs_8tx_firmware
- phoenixcontact:fl_switch_smn_6tx\/2fx_firmware
- phoenixcontact:fl_switch_smn_6tx\/2fx_sm_firmware
- phoenixcontact:fl_switch_smn_6tx\/2pof-pn_firmware
- phoenixcontact:fl_switch_smn_8tx-pn_firmware